One-piece folding cardboard box



AP" 1939- M. E. SEIFER ONE-PIECE FOLDING CARDBOARD BOX Filed April 26,1937 2 Sheets-Sheet 1 oivllllm I INVENTOR Mcm'ou ESEIFEP.

ATTORNEY IIIIIIIII April11,1939. M. E. SEIFER 2,154,218

ONE-PIECE FOLDING CARDBOARD BOX Filed April 26, 1937 2 Shets-$heet 2.INVENTOR Moarouflsslrzk.

Patented Apr. 11, 1939 UNITED STATES PATENT OFFICE ONE-PIECE FOLDINGCARDBOARD BOX Morton E. Seifer, New York, N. Y.

Application April 26, 1937, Serial No. 138,961

5 Claims.

This invention relates to new and useful improvements in a one piecefolding cardboard box. In part, the subject matter of this applicationis similar to that disclosed in my previous application, Serial No.753,847, filed on November 20, 1934.

The dominant object of this invention is to so construct the one piecefolding box that it is capable of being closed and opened withoutdistorting parts thereof. Heretofore boxes very similar to those coveredby this invention have been made. This invention distinguished fromthese prior constructions primarily in the loca-- tion of the pivotpoint, or point of turning and sliding of the cover of the box. Inaccordance with this invention the pivot point or point of turning andsliding of the cover is so arranged that it is not necessary to bend anddistort portions of the box to open and close the same.

The invention has for a further object. the

construction of a box as mentioned which is,

characterized by a lid section and a body section, and arranged in sucha manner so as to be foldable from a flat, inoperative position into anopen, operative position.

' Still further the invention particularly proposes an arrangementwherein each section of the box, that is, the lid and body sections,have main walls, outer side walls, end walls, and are arranged with aside wall common to the lid and body sections, and certain foldablesubstantially L-shaped webs connecting like end walls and arranged withfolds in a certain manner so that the box may operate as previouslymentioned.

Still further the invention contemplates a provision wherein the box maybe made to function with the lid thereof hinging upon one creased edgeof the material of the box, or opening up by the motion of one of theside walls thereof.

Another object of the invention is the construction of article asmentioned which is simple and durable and which can be manufactured andsold at a reasonable cost.

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel features of the invention are more particularly set forth.

In the accompanying drawings forming a materlal part of this disclosure:

Fig. 1 is a perspective view of a box constructed according to thisinvention, and illustrated in the closed position.

Fig. 2 is a perspective view of the box shown in Fig. 1, in an openposition.

Fig. 3 is an end View looking from the right hand end of Fig. l, butillustrated with a portion thereof broken away to illustrate interiorparts.

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 1.

Fig. 5 is a fragmentary horizontal sectional view taken on the line 5-5of Fig. 1.

Fig. 6 is a fragmentary sectional view taken on the line 66 of Fig. 5.

Fig. 7 is a view of the box opened up into the flat position.

Fig. 8 is a fragmentary perspective view of one of the corners of thebox illustrated in a partially closed position.

Fig. 9 is a perspective view of the box shown in an open condition.

Fig. 10 is a perspective view of a box constructed according to amodification of this in- 120 vention, and illustrated in the completelyclosed position.

Fig..11 is a perspective view of the box illustrated in Fig. 10 in anopen condition.

Fig. 12 is a perspective view of the box illustrated in Figs. 10 and 11but showing the box in an open position.

Fig. 13 is a perspective view of abox of modifled form.

The one piece folding cardboard box, according to this invention,comprises a lid IU of shallow height and a body section II of relativelydeep height. These sections have main walls l0 and H respectively, outerside walls 10 and ll respectively, end walls Ill and respegtively, and acommon inner side wall Ill. This side wall I 0' forms a portion of thebody section of the box and also forms one of the sides of the lid ofthe box. All of said walls are connected and foldable with reference toeach other. 40

Foldable L-shaped webs [2 are connected like end walls I!) and I I ofthe sections and are arranged with the vertical arms l2 foldably joiningwith the end walls I l of the body section and with the horizontal arms12 foldably joining with the end walls ll of the lid section. These L-shaped webs are also formed with converging lines of folds l3 and M fromthe bottom corners thereof to the inner corners [5 of the junctions ofthe arms [2 and I2. The folds l3 and I4 are inward, while the foldsbetween the edges of the L- shaped webs at the end walls are outward sothat the box may be folded from the open position illustrated in Fig. 2,to the closed position illustrated in Fig. 4.

Figs. 7 and 8 illustrate the construction of the cardboard box infurther detail, so that a construction wherein the box may be completelycollapsed into a flat condition may be understood. More particularly,the ends l6 of the material forming the box are bent inwards and helddown with staples l'l. These staples are spaced from the sides of thematerial so that the ends of the end walls may be engaged thereunder asclearly illustrated in 'Fig. 7. The ends of the walls are formed withdiagonal folds I B from the inner corners and arranged so that each endwall may be moved to its operative position as illustrated in Fig. 8.The full line 20 is for the purpose of forming the side wall lfl of the-lid. The score line 2| is for the purpose of forming the side ,I I ofthe body section. The score lines '22 and23 locate the common inner sidewall elill. Itzis believed that the other parts of the box may bereadily recognized by the reference numerals as i applied ipreviously.

A means is providedrfor locking the :box in the closed position andithis means 'comprises several lugs .25 stamped from the :material ofoneof the side walls, preferably, the side wall li of the body section, andengageable into rreceiving slots 26 formed in the side wall I0 Theselugs25 are so constructed that their :enidszmay be bent inwards, asclearlyillustrated inlFig. 1, and engaged through the openings :26 andthen allowed to bend laterally, as shown in Fig.5, so as to hold-the-closed position. Since the lugs 25 are relatively stiff, they willnaturally assume the posi-- tion illustrated in 5 :when the ends thereof'are engaged through the openings.

In Fig. 9 the box is shownrinthe 1open;position. It ShOUIdZbe notedthat'whenithe box is closed the point A will theoreticallyfirst move"over to the'position-Kalongtherdot and dash'line "between these.points. Then, as Zthe'cover of the box is closed the .point B williswin'giupward in an arc to the position BB. During this period'thecover ofthe box will engage across'the body of the boxand'willassum'e :the position indicated' 'by the line BB and 'C. ;Afeature of the invention is "that the width-of .the box (between thepoints D and E) is substantially .equal to or 'slightlylarger thanitheidistance between BB and C. Therefore, the cover of the box willeasily "close upon the "body of thebox. Practically the point-A willmove in some .path .to the :pointAA and'then slide down to theipoint BB.

In Figs. 10'to l2 amodification of the-invention has been disclosedwhich distinguishes from the prior form -in'the construction of the lidand the junction of the sidesof thelid with'the side wallsof thebodysection. The one piece folding "box comprises a lid l0" which atits'free end is of the same height "as'the'body section H. The sidewalls of the lid are cut at an-angle so that the inner ends thereof aresubstantially the height of theouter ends. These inner'ends connect withthe bottom arms of foldablesubstantially L-shaped'webs 12". Eachof'these'webs has a-vertical arm H 'which has its inner side cut=at aninclination and extending from thetop outer corner downwards tothejunction of the vertical and horizontal -arms.

Each L-shaped web '|2"'is formed'with converging lines of folds l3 andfrom the bottom corners thereof to the inner corners l5 of the junctiono'f-the said vertical and horizontal arms. The f0ldsil3 and 14 areinwards, while thefolds between'the edges of each L-shaped web at theend walls are outwards so that the-box may fold ibody:and theside walls:of the cover.

pivot.

from an open position as shown in Fig. 11 to the closed position shownin Fig. 10. In other respects this form of the invention is identical tothe previous form an dsimilar parts may be identified by thecorresponding reference numerals.

In Fig. 12 an open view of the box is illustrated. The box closestheoretically in the following manner: The point A first moves over tothe position B and then as the box is closed B moves on the am over tothe position BB. Thecover of the box then is engaged over the body ofthe box and when the bottom inclined edge of the cover first engages thebody it will be at the position GCyand in thesame closed position of thebox it wilLbe at the ,position CCC. A feature of the invention residesin the fact that the cover of the .boxzpivots aboutthe point BB to closethe cover on thebody of the box. Furthermore, the length of the edge ofthe cover of the box between the points 1D :and -,E is -equal to thelength between the points BB and CC, and the points BB and 206C.Forthis-reason the box is capable of being closed without the necessityof crushing the side walls. Practically, .the point A will move in thesame path to the point AA and then slide down :to thepointrBBwhen theboxis closed.

Iniig. 13 another form of the invention has been disclosed. In this'formthere is an L-shaped web :portion :i'Z between the side walls of the Theside WZJISOf the cover are of the same depth as the side walls 'of thebody portion. When this box .isvclosed the pointA will theoreticallyfirst travel :along the dot and dash lines to the position B, andthenalong the arcuate line to the position .BB. :From this position thecover portion will When the cover is initially moved to close the boxthe pointD will-travel along the dot and .dash line to the position DDand then to the .position DDD.

vIn practice, when the box is closed, the cover .is not moved so farthat the point A really reaches=thetheoretical point B, since at thesame time that the cover is being pivoted it is being lifted to engageit over the bodyportion. It may be lifted-to aposltion in which thepointA reaches the point AA-on the body portion. From this :point AA thepoint A will slide downwards to the position BB. It will not benecessary to distort theside Walls of thebox because the distance on thecover from the point A to the point E is equal in length or slightlygreater than the distance from the point BB to the point F.

The portioniof the side wall of the cover between the line AE and thepoint D is merely excess .material which is in a position so as not tointerfere with using the points A to pivot the box cover closed.

The dot and dash lines in Fig. 10 indicate the 1 box in Fig. 12 in aposition before it is completely closed. These dot and dash linesclearly show the cover pivoting about the mid-point of the height of thebox.

While I have illustrated and described the preferred embodiments of myinvention, it is to be States Letters Patent is:

1.'A one piece folding box comprising a lid section and a body section,each of said sections having a main wall, outer side Walls, end walls,and an inner side wall common to both sections, all of said walls beingconnected and foldable with reference to each other, and substantiallyL-shaped webs having legs of substantially equal length connecting likeend walls of the sections and arranged with the vertical arms foldablyjoining with the end walls of the body section and with the horizontalarms foldably joining with the end Walls of the lid section, andconverging lines of folds from the bottom corners of the webs to theinner corners of the junctions of the arms thereof.

2. A one piece folding box comprising a lid section and a body section,each of said sections having a main wall, outer side walls, end walls,and an inner side wall common to both sections, all of said walls beingconnected and foldable with reference to each other, and substantiallyL-shaped webs having legs of substantially equal length connecting likeend walls of the sections and arranged with the vertical arms foldablyjoining with the end walls of the body section and with the horizontalarms foldably joining with the end walls of the lid section, andconverging lines of folds from the bottom corners of the webs to theinner corners of the junctions of the arms thereof, the vertical arms ofsaid L-shaped webs being cut off at a slant.

3. A one piece folding box comprising a lid section and a body section,each of said sections having a main wall, outer side walls, end walls,and an inner side wall common to both sections, all of said walls beingconnected and foldable with reference to each other, and substantiallyL-shaped webs having legs of substantially equal length connecting likeend walls of the'sections and arranged with the vertical arms foldablyjoining with the end walls of the body section and with the horizontalarms foldably joining with the end walls of the lid section, andconverging lines of folds from the bottom corners of the webs to theinner corners of the junctions of the arms thereof, and the end walls ofsaid lid section being cut at an inclination so that the outer wall ofthe lid section is as deep as the body section, while the inner ends ofthe end walls connect with the arms of said L-shaped webs.

4. A one piece folding cardboard box, comprising a lid of shallowheight, and a body section of deep height, each section having a mainwall, outer side walls, end walls, with an inner side wall common toboth sections, all of said walls being connected and foldable withreference to each other, foldable L-shaped webs having legs ofsubstantially equal length connecting like end walls of the sections andarranged with the vertical arms foldably joining with the end walls ofthe body section, and with the horizontal arms foldably joining with theend walls of the lid section, and converging lines of folds from thebottom corners of the webs to the inner corners of the junctions of thearms thereof, said lid pivoting about a point midway between the heightof said body section.

5. A one piece folding box comprising a lid section and a body section,each of said sections having a main wall, outer side walls, end walls,and an inner side wall common to both sections, all of said walls beingconnected and foldable with reference to each other, and substantiallyL-shaped webs having legs of substantially equal length connecting likeend walls of the sections and arranged with the vertical arms foldablyjoining with the end walls of the body section and with the horizontalarms foldably joining with the end walls of the lid section, andconverging lines of folds from the bottom corners of the webs to theinner corners of the junctions of the arms thereof, and the end walls ofsaid lid section being cut at an inclination so that the outer wall ofthe lid section is as deep as the body section, while the inner ends ofthe end walls connect with the arms of said L-shaped webs, said lidpivoting and sliding about a point midway between the height of saidbody section.

MORTON E. SEIFER.

